Explosive-engine.



T. J. FLA'NAGAN.

EXPLOSIVE ENGINE. APPLICATION FILED OCT. I8. 1911. RENEWED MAR-19.1915.

1, 143,526. Patented June 15,1915.

I 2 SHigTS-SHEEF I. 7 jgi i 1 i 5 i I 4 J 5 '2 3 5 -g. 6 J1 MM/mm Y'Aomas J: F/Qnagah THE NORRIS PETERS co. PHOTO-LITHO.. WASHINGTON. D c.

T. J. FLANAGAN.

EXPLOSIVE ENGINE. APPLICATION FILED M118, 1911. RENEWED MAR. 19.1915.

7H5 NORRIS PETERS C0.. PHOTO-LITHQ. WASHINGTON. 0 c.

Patented June 15, 1915.

2 SHEETS-SHEET 2.

THQMAS J.

rnenaenn, or nnonnsnn'xnnses, ASSIGNOR or ONE-HALF TO 'nicnonns s. SIBERT, ornnonnsnn, KANSAS.

EXPLOSIVE-ENG-INE.

masses.

Specification of Letters ratent.

Patented June 15, 1915.

Application filed October 18, 1911, Serial No. 655,299. Renewed March 19,1915. Serial No. 15,546.

To all whom it may concern :Be 1t known that I, THOMAS J. FLANAGAN,

a citizen of the United. States, residing at Neodesha, in the county of Wilson and'State of Kansas, have invented new and useful Improvements in Explosive Engines, of which the following is a specification.

E The present invention relates to engines of the internal combustion type. and most especially to the class designated as two-cycle, the purpose being 'the provision. of an explosive engine of the two-cycle species which involves a comparatively simple construc- I tion and arrangement of parts and which is compact, positive and certain in operation, the gaseous mixture being drawn 1nto the cylinder upon the forward stroke of the piston and the charge thus drawn in being com pressed upon the working stroke of the piston and permitted to pass into the explosion or working end of the cylinder as the piston about completes its return stroke-and a moment after the exhaust valve has been opened to provide a relief for the burnt gases, the cylinder being partially scavengedby the inrush of the gaseous mixture.

The invention consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the ac the appended claim. i

Referring to the drawings, forming apart of the specification, Figure 1 is a side-"view of an explosiveengine embodying the invention. Fig. 2 is a vertical central section of companying drawings, and pointed out in the engine, showing the piston at the end of.

its return stroke. Fig. 3 is a section on the line 33 of Fig. 2, showing the piston at the opposite end of the cylinder. Fig.4.is a detail view of the cylinder showing the ports.

Corresponding and like parts are referred to in the following description, and indi-- A jacket 4 surrounds the larger end portion 2 of the cylinder and incloses a space 5 through which a cooling medium is circulated. The larger end portion 2 of the cylinder is The inner end of the jacket iis adapted to be securedto the bed plate or other supporting structure of the engine. The inlet valve 6 is preferably located upon one side of the cylinder near the shoulder 3 and comprises a casing having openingsS and 9. The opening 8 is considerably larger than the opening 9 and admits air. The opening 9 is connected with the source of fuel supply, such as gasolene, naphtha, gas, or the like. Ayalve 10 controls the outlet of the casing and is adapted to be operated at the proper time by means of a cam or suitable trip. A chamber llis formed in a side of the cylinder opposite the valve casing and ports 12 and 13 establish communication between said chamber and the interior of the working end portion of the cylinder. Apassageld connects with the outer end of thecylinder and communicates with a casing 15 in which a valve 16 is arranged to operate, said valve 16 being adapted to be operated by means of a cam or other movable part of the engine.

The piston arranged to operate in the cylinder comprises an end portion 17 and an end portion 18, the latter being of a diameter corresponding to the diameter of the working end portion 2 of the cylinder and the part 17 corresponding to the diameter of the end part 1 of the cylinder. A shoulder 19 is formed between the two parts 17 and 18 of the piston and is inclined to correspond with the inclination of the shoulder 3 of the cylinder. Both parts of the piston obtain a close fit in corresponding parts of the cylinder. The piston is hollow and is connected with the crank shaft by means of a rod 20 which is attached to a wrist pin supported at its ends in the walls of the smaller part 17 of the piston. The distance between the shoulder 19 and the end of the part 18 of the piston corresponds approximately to the distance between the two sets of ports 12 and 13 so that upon the completion of the working stroke of the piston both ports 12 and 13 are uncovered to admit of the gaseous mixture passing from the larger end of the working part of the cylinder to the explosion end, as indicated most clearly in Fig. 2.

In the operation of the engine the piston upon its outstroke draws in a charge of gaseous mixture into the space 21 formed between thetwo shoulders 3 and 19 and between the part 17 of the piston and the part 2 of the cylinder. As the piston moves forward the valve 10 is unseated and air is drawn into the valve casing through the opening 8 and fuel is drawn into the said casing through the opening 9, the air and fuel mixing and passing into the chamber 11 and into the space 21. As the piston starts on its return stroke the valve 10 closes and the gaseous mixture confined in the space 21 is compressed and when the piston reaches the limit of its return stroke the two ports 12 and 13 are uncovered, thereby permittingthe gaseous mixture to pass from the space 21 into the end portion of the cylinder in front of the piston, which constitutes the explosion or working end of the return stroke and before the ports 12 and 13 are uncovered the valve 16 is opened to per mit an escape of the burnt gases and an instant before the valve 16 closes the ports 12 and 13 are uncovered and the aseous w ll) charge confined under compression in the space 21 rushes into the explosion end of the cylinder and scavenges the same, the valve 16 closing to prevent escape of any of the charge. It will thus be understood that the explosion of the gaseous mixture takes place at the completion of each outstroke of the piston. Each of the ports 12 and 13 embodies a plurality of small openings arranged in straight lines, as indicated most clearly in Fig. 1.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which co ies of this patent may be obtained for five cents each, by addressing Washington, 1); G.

bination of a cylinder, aninclined shoulder" formed upon said cylinder, a reduced cylinder integrallyconnected with said shoulder,

a tubular-piston moving snugly in said reduced cylinder, an inclined shoulder formed on saidtubularpiston, a head on the end of said piston snugly fitting said first named cylinder a water jacket surrounding said first named'cylinder and said'first named shoulder, said first named cylinder being formed at a point spaced immediatelyabove said first named shoulder with two series of horlzontally alming ports, the distance between said ports equaling the width of said cylinder head, saidwater jacket having a channel of a length to communicate with said ports, a right. angular extension formed upon said jacket in line with saidchannel, a valve seat arranged parallel to said cylinders in said extension, a valvearranged to seat in said valve seat, a rod on said valve, a chamber in which said rod is movable, oppositely disposed passage ways opening into said chamber, a laterally extending passage way opening into the outer end of said first named cylinder, a valve seat formed in said lateral passage way, a valve engaging said seat, and a rod arranged to operate said valve, said. chamber communicating with said channel when said first namedvalve is opened; 7

In testimony whereof I afiix mysignature in-presence of two witnesses.

THOMAS FLANAGAN.

Witnesses:

J. J. 'MILLER, M. J FLANAGAN.

the Commissioner of Patents- 

